Nut-lock.



Patented .Mar. 25, 1902'. H. J. MERTZ.

NUT LOOK.

(Application filad Aug. 2, 1901.)

No. 695,94l.

(No Modal.)

m M J; i i 1 R E W Z Y/J v away UNITED STATES PATENT OFFICE.

HENRY JOHN MERTZ, OF BEARDSTOWVN, ILLINOIS.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent N 0. 695,941, dated March 25, 1902. Application filed August 2,1901. Serial No 70,576. (No model.)

To all whom, it may concern..-

Be it known that I, HENRY JOHN MERTZ, a citizen of the United States, residing at Beardstown, in the county of Cass and State of Illinois, have invented new and useful Improvements in Nut and Bolt Locks, of which the following is a specification.

My invention has relation to nut and bolt locks; and it consists in the novel construc- :0 tion and arrangement of its parts, as hereinafter described.

The object of my invention is to provide a nut and bolt look adapted to firmly secure the nut and bolt together.

In the accompanying drawings, Figure 1 is a perspective View of a nut and bolt, showing the locking device attached thereto. Fig. 2 is a perspective view of the nut and bolt, showing the under side of the locking device. Fig. 3 is a side elevation of a bolt, showing the nut and locking device in section; and Fig. at is a perspective view of the plate used in connection with the locking device.

The locking device consists of the disk 1,

sides of the bolt, as shown in Figs. 2 and 3.

The plate 6 is provided with a lug 7, which is adapted to enter a recess on the outer face of the disk 1, said plate havinga perforation 8, adapted to register with the central perforahaving on its under side an annular flange 2,

tion of the disk 1. lhe bolt also passes through the perforation 8 of the plate (5.

In assembling the parts the disk 1 is placed over the bolt, and the nut 9 is screwed in place on the thread of the bolt. When it is sufficiently tightened, the end of the plate 6 is bent up, as at 10, against the side of the nut, thus preventing the same from becoming loosened. The saw-tooth projections 5 of the segments 3 engage the bolt,andthe serrationsetengage the disk 1. Thus the said disk is prevented from turning or moving with relation to the bolt.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is.

1. A nut and bolt lock consisting of a disk having a perforation adapted to receive the bolt, and an annular flange located on said disk, a segment having on one edge serrations adapted to engage said flange and on its other edge saw-tooth projections adapted to engage the bolt, and a means for securing the nut to the disk.

2. A nut and bolt lock consisting of a disk having a central perforation adapted to receive the bolt, and an annular flange located on the disk, segments having at their outer edges serrations adapted to engage the flange and at their inner edges saw-tooth projections adapted to engage the bolt, a plate having a perforation adapted to receive the bolt, said plate having a lug adapted to enter a recess on the outer face of the disk, the end of the said plate adapted to be bent at an angle along the side of the nut.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY JOHN MERTZ.

Witnesses:

GEO. SUTKEMYER, HENRY STEPHENS. 

